Pop superstar Beyoncé just might end up saying hello to a new step-sister, aged 4.

Online website Buzzfeed said a 30-year-old woman filed court documents against the singer's father Mathew Knowles on May 30.

Taqoya Branscomb alleged Knowles, 63, is the dad of a Texan girl born in 2010. She wants to make Knowles take a DNA test. Among her requests: child support and money for attorney fees.

Knowles is no stranger when it comes to facing a paternity suit: In 2010, he acknowledged being the father of actress Alexsandra Wright’s son.

She has a step-brother

The affair with Wright led to his divorce from former wife Tina - after nearly 30 years of marriage. In February 2013, he was ordered to pay Wright US$12,000 a month. A judge reduced the amount to US$2,485 a month, after he cited dwindling income in recent years.

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Previously the manager of R&B group Destiny’s Child, which Beyonce was part of, dad and daughter parted ways three years ago. Beyoncé announced the mutual decision. “He is my father for life and I love my dad dearly,” the singer said in a statement. “I am grateful for everything he has taught me.”